[PATCH] mm/memory_hotplug: Print the correct pfn in do_migrate_range()

[Li Zhijian]

The pfn value needs to be retrieved correctly when PageTransHuge(page)
is true. Fix it by replacing the usage of 'pfn' with 'page_to_pfn(page)'
to ensure the correct pfn is printed in warning messages when isolation
fails.

Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx>
---
 mm/memory_hotplug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 26790c8d5b43..000430406a9e 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1829,7 +1829,7 @@ static void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
 
 		} else {
 			if (__ratelimit(&migrate_rs)) {
-				pr_warn("failed to isolate pfn %lx\n", pfn);
+				pr_warn("failed to isolate pfn %lx\n", page_to_pfn(page));
 				dump_page(page, "isolation failed");
 			}
 		}
-- 
2.29.2